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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/util/hash_containers.h | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rocksdb/util/hash_containers.h')
-rw-r--r-- | src/rocksdb/util/hash_containers.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/rocksdb/util/hash_containers.h b/src/rocksdb/util/hash_containers.h new file mode 100644 index 000000000..52be3718c --- /dev/null +++ b/src/rocksdb/util/hash_containers.h @@ -0,0 +1,51 @@ +// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). + +// This header establishes compile-time pluggable implementations of hashed +// container structures, so that deployments have the option of minimal +// dependencies with ok performance (e.g. std::unordered_map) or more +// dependencies with optimized performance (e.g. folly::F14FastMap). + +#pragma once + +#include "rocksdb/rocksdb_namespace.h" + +#ifdef USE_FOLLY + +#include <folly/container/F14Map.h> +#include <folly/container/F14Set.h> + +namespace ROCKSDB_NAMESPACE { + +template <typename K, typename V> +using UnorderedMap = folly::F14FastMap<K, V>; + +template <typename K, typename V, typename H> +using UnorderedMapH = folly::F14FastMap<K, V, H>; + +template <typename K> +using UnorderedSet = folly::F14FastSet<K>; + +} // namespace ROCKSDB_NAMESPACE + +#else + +#include <unordered_map> +#include <unordered_set> + +namespace ROCKSDB_NAMESPACE { + +template <typename K, typename V> +using UnorderedMap = std::unordered_map<K, V>; + +template <typename K, typename V, typename H> +using UnorderedMapH = std::unordered_map<K, V, H>; + +template <typename K> +using UnorderedSet = std::unordered_set<K>; + +} // namespace ROCKSDB_NAMESPACE + +#endif |